Re: Core data, array controller, and add:
Re: Core data, array controller, and add:
- Subject: Re: Core data, array controller, and add:
- From: Dale Schack <email@hidden>
- Date: Wed, 1 Nov 2006 22:56:34 -0700
mmalc,
Works like a charm. Thanks.
As an aside, I see that this is covered in the Core Data FAQ. My
apologies for not having read the FAQ prior to posting the question.
Dale
On 1-Nov-06, at 9:01 PM, mmalc crawford wrote:
On Nov 1, 2006, at 1:51 PM, Dale Schack wrote:
I now want to intercept the point where the newly created Child is
added to its Parent, as I need to update a non-standard attribute
that maintains ordering. I had thought to perform this in the
Parent relationship methods (e.g. addChildObject:)
However, this method is not being called by the default
NSArrayController add: method. Do I need to create a custom
NSArrayController to ensure that addChildObject: is called on the
Parent? Or am I missing something basic here?
This is (unfortunately) due to a (known) bug in NSArrayController;
it does not invoke custom accessor methods.
You can work around this if you can introduce '.self' into the
keypath, for example:
If the contentSet of your detail array controller is bound to
[MasterArrayController].selection.children
then change it to
[MasterArrayController].selection.self.children
mmalc
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